CD14538BM96 from Texas Instruments, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	C1	passive	External timing capacitor connection for monostable 1. Connect C_ext between C1 and RC1; pulse width T = RC * C_ext * ln(2) approximately (see datasheet timing equation).
2	RC1	passive	External timing resistor/capacitor node for monostable 1. External R connects from VDD to RC1; C_ext connects between C1 and RC1.
3	RESET1	input	Active-low reset input for monostable 1. A low level immediately terminates the output pulse and holds Q1 low.
4	+T1	input	Positive-edge trigger input for monostable 1. A low-to-high transition triggers the output pulse when RESET1 is high.
5	-T1	input	Negative-edge trigger input for monostable 1. A high-to-low transition triggers the output pulse when RESET1 is high.
6	Q1	output	True output of monostable 1. Goes high for the programmed pulse width when triggered; retriggerable and resettable.
7	Q1_BAR	output	Complementary (inverted) output of monostable 1. Goes low for the programmed pulse width when triggered.
8	VSS	power_in	Ground / negative supply reference (0 V).
9	Q2_BAR	output	Complementary (inverted) output of monostable 2. Goes low for the programmed pulse width when triggered.
10	Q2	output	True output of monostable 2. Goes high for the programmed pulse width when triggered; retriggerable and resettable.
11	-T2	input	Negative-edge trigger input for monostable 2. A high-to-low transition triggers the output pulse when RESET2 is high.
12	+T2	input	Positive-edge trigger input for monostable 2. A low-to-high transition triggers the output pulse when RESET2 is high.
13	RESET2	input	Active-low reset input for monostable 2. A low level immediately terminates the output pulse and holds Q2 low.
14	RC2	passive	External timing resistor/capacitor node for monostable 2. External R connects from VDD to RC2; C_ext connects between C2 and RC2.
15	C2	passive	External timing capacitor connection for monostable 2. Connect C_ext between C2 and RC2.
16	VDD	power_in	Positive supply voltage input. Operating range 3 V to 18 V (CMOS).

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOP-16
Category	Logic
Pins	16

Ordering variants

Same part, different packaging or reel option.

CD14538BM96
CD14538BM96M
CD14538BM96E
CD14538BM96N

CAD (KiCad official)

Symbol: CD14538BM96
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOP-16 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (19 pp, sha256 7f39646e79273f97, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF